Sec. 1. 38 MRSA §464, sub-§4, ķA, as amended by PL 2003, c. 650, §3, is further amended to read:

A. Notwithstanding section 414-A, the department may not issue a water discharge license for any of the following discharges:

(1) Direct discharge of pollutants to waters having a drainage area of less than 10 square miles, except that:

(a) Discharges into these waters that were licensed prior to January 1, 1986 are allowed to continue only until practical alternatives exist; and

(b) Storm water discharges in compliance with state and local requirements are exempt from this subparagraph;

(c)__Aquatic pesticide or chemical discharges approved by the department and conducted by the department, the Department of Inland Fisheries and Wildlife or an agent of either agency for the purpose of restoring biological communities affected by an invasive species are exempt from this subparagraph; and

(d)__Chemical discharges for the purpose of restoring water quality in GPA waters approved by the department are exempt from this subparagraph;

(2) New direct discharge of domestic pollutants to tributaries of Class-GPA waters;

(3) Any discharge into a tributary of GPA waters that by itself or in combination with other activities causes water quality degradation that would impair the characteristics and designated uses of downstream GPA waters or causes an increase in the trophic state of those GPA waters except for aquatic pesticide or chemical discharges approved by the department and conducted by the department, the Department of Inland Fisheries and Wildlife or an agent of either agency for the purpose of restoring biological communities affected by an invasive species in the GPA waters or a tributary to the GPA waters;

(4) Discharge of pollutants to waters of the State